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Re: 1950's structural steel strength and rivet capacity

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In the 50's, we were still using A7 steel.  Fy = 33 ksi.   A36 didn't come in until the early 60's, if I remember correctly.   On the other hand, the higher grades were available and the truss company may have used these. 

Neil Moore, SE, SECB

At 04:54 PM 5/25/2006, jerold taylor wrote:
I am evaluating a series of roof trusses at an industrial plant for the application of new equipment on the roof.
The building was built in 1950.  Was Fy = 36ksi typical during that decade, or should I assume a lower grade steel is probably what is in place?  The chords and diagonals are both back to back angles.
The connections are 7/8" diameter rivets.  Does anyone have any reference data on the shear capacity of rivets for that time period?  Each rivet should be in double shear at the connections.
Thank you

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